The Brady bunch SISTERS AT WAR!

Years after their TV stardom, Jan and Marcia's onscreen rivalry is still rife in real life

It’s “Marcia, Marcia, Marcia” all over again as Brady Bunch sisters Maureen McCormick and Eve Plumb’s bitter feud has taken a turn for the worse. Sources say

Eve, who played Jan on the smash TV show, has hit the roof over Maureen’s plans for a movie biopic, vowing to “never be in the same room” as her again.

Despite putting on all smiles for the 50-year TV reunion last year, friends say bosses had a nightmare trying to keep Maureen, 63, and Eve, 62, from “scratching each other’s eyes out” when the cameras stopped rolling.

“Those two have never got on,” says a long-time friend. “It was a miracle to get them in the same room with each other last year.”

Now, reformed cocaine addict Maureen is in talks with several streaming studios about a movie biopic, in which she tells her harrowing story – and Eve is furious she’s going to ramp up more fabrications.